Target Sports

300blkout complete upper CRESTVIEW

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  • rnkgunner

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    Brand new, complete upper, all it needs is a lower!
    Decided on complete different route.
    My loss you’re gain.

    M4 Feed Ramp barrel extension
    T-Marked forged upper receiver
    1-9" twist, 6 grooves, right handed

    11595E (SAE 4150) Barrel steel
    Manganese Phosphate finish barrel

    $550.00 OBO
    ****not looking for trades at this time!

    16" long, threaded (standard 1/2 x 28 tpi)and has an A2 flash hider with the correct crush washer, and a correctly sized gas port for reliable function. The barrel is machined from chrome-moly, high vanadium steel and hardened to a U.S. government Mil-spec of Rc 26-32. The barrel, and all external steel parts, are manganese phosphate finished IAW 5.3.1.2 of Mil-STD-171, the U. S. government's recommended protective finish for steel. This finish not only looks great, it affords complete corrosion protection. These barrels are of M4 contour (tapered under the handguards, .750 under the front sight base) with M203 groove. This contour dissipates heat and helps alleviate barrel whip. The barrel is button rifled with 6 grooves, right hand, 1 / 9" twist. The 1/9” twist is best because it handles the widest variety of ammunition and bullet weights.


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    Last edited:

    FLT

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    Are you sure it’s 1 in 9 twist ? I’ve never seen a 300Blk with that twist rate .
     
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